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Fail-safe Relay Diagnostic Trouble Code (DTC) 5-1: Fail-safe Relay Diagnosis With engine running, TCS ), DTC 5-1 is indicated. Remove the fail-safe relay, and ). Is the relay OK? Check for a short to body ground 1. Disconnect the fail-safe relay and TCS control unit 20P con- 2. Check for continuity between the TCS control unit 20P con- nector terminal No. 6 and body Is there continuity? Check the FSR circuit inside the 1. Connect the fail-safe relay and TCS control unit 20P connec- 2. Turn the ignition switch ON (II). the TCS control unit 20P con- nector terminal No. 6 and body Is there battery voltage? Check for a short to power in the Measure the voltage between the TCS control unit 20P connector Is there battery voltage? The system is OK at this time. Replace the fail-safe relay. TCS CONTROL UNIT 20P CONNECTOR Wire side of female terminals Repair short to body ground in Replace the TCS control unit. Repair short to power in the wire Main Menu Table of Contents |